The FSM on page PR10 says to apply molybdenum disulfide lithium based chassis grease to the slip yokes only (zirk's 2 and 7). The spider bearing replacement page says to pack the spider bearings with MP Grease (Multi-purpose grease, usually lithium based, zirks 1, 3 and 8). I can't find where the FSM says anything about the double cardan, but I believe it lumps it in with the spider bearings, so MP grease (I assume this because it lumps them together for inspection method). So in summary:
1. MP
2. Moly
3. MP
4. MP?
5. MP?
6. MP?
7. Moly
8. MP
This was all pulled from the FSM dated 2002 (only one I have seen posted online)
Then there is a TSB from 1999 that says differently
1. MP
2. MP
3. MP
4. Moly
5. Moly
6. Moly
7. MP
8. MP
Ok guys, just wanted to chime in on this topic. Since day one, I've had the "bump" issue even though I am vigilant about greasing my drive lines. My issue was two fold, I get a slight bump when I come almost to a stop and when I release the brakes it "bumps." Another is after coming to a complete stop and then releasing the brakes I got the "bump." Almost like pressure building and then releasing but not quick enough, hence the bump. Obviously from the slip yokes.
I've ready numerous threads on what kind of grease to use...yada yada yada. Based on my research, I decided to use Mobile 1 Synthetic (red) as a coverall for the whole drive line. The bump was now intermittent. Fast forward to last night, I decided to follow the FSM and use moly grease on the slip yokes and continue to use Mobile one the u joints. Guess what..."bump" is 100% gone!!!
While pumping the grease into the rear slip yoke, I noticed something I've never seen before when I used the Mobile 1, the moly grease was now seeping through where the slip yoke and drive line meet allowing it to easily contract and expand. My theory is that the Mobile 1 grease caused a vacuum seal that would not let the slip yoke move as much. It's just a theory. However, I do know for certain that as of right now the annoying bump is gone. BTW, someone on the Tundra forum wrote that moly infused grease is specifically made for metal on metal contact, which makes sense for the slip yokes.
I will try this this weekend. I usually follow the service manual exactly but was too cheap to buy a second grease gun and lube. I hate that mobil 1 stuff though, it leaked a huge amount of red "juice" out of the grease gun all over my garage.
Ok guys, just wanted to chime in on this topic. Since day one, I've had the "bump" issue even though I am vigilant about greasing my drive lines. My issue was two fold, I get a slight bump when I come almost to a stop and when I release the brakes it "bumps." Another is after coming to a complete stop and then releasing the brakes I got the "bump." Almost like pressure building and then releasing but not quick enough, hence the bump. Obviously from the slip yokes.
I've ready numerous threads on what kind of grease to use...yada yada yada. Based on my research, I decided to use Mobile 1 Synthetic (red) as a coverall for the whole drive line. The bump was now intermittent. Fast forward to last night, I decided to follow the FSM and use moly grease on the slip yokes and continue to use Mobile one the u joints. Guess what..."bump" is 100% gone!!!
While pumping the grease into the rear slip yoke, I noticed something I've never seen before when I used the Mobile 1, the moly grease was now seeping through where the slip yoke and drive line meet allowing it to easily contract and expand. My theory is that the Mobile 1 grease caused a vacuum seal that would not let the slip yoke move as much. It's just a theory. However, I do know for certain that as of right now the annoying bump is gone. BTW, someone on the Tundra forum wrote that moly infused grease is specifically made for metal on metal contact, which makes sense for the slip yokes.
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I took my sleeve yoke apart and greased it really well with moly grease and it didn't get rid of my sleeve yoke binding problem. When I cleaned it up and greased it with Ford XG-8 grease, the problem finally went away. Maybe my sleeve yoke is more worn than yours from improper or no greasing over it's life.
The Ford XG-8 was manufactured to directly address the slip yoke and sleeve yoke binding problems with their trucks. And since drive shafts are drive shafts, it works great for our trucks too.
Here's a link for anyone wanting to try out the Ford XG-8 grease themselves.
http://www.amazon.com/Genuine-Ford-...d=1458136974&sr=8-1&keywords=Ford+XG-8+Grease